Nginx廚師食譜沒有方法錯誤

Question

我正在嘗試從Chef opscode網站（ http://community.opscode.com/cookbooks/nginx）使用Nginx的配方

當我運行配方時，它會觸發一個無方法錯誤，該錯誤可追溯到source.rb的這一行代碼。 這是跟蹤中引用的第28行。

nginx_url = node['nginx']['source']['url'] ||
  "http://nginx.org/download/nginx-#{node['nginx']['source']['version']}.tar.gz"

誰能解釋可能是什么問題？ 我跟着這個Railscast http://railscasts.com/episodes/339-chef-solo-basics?view=asciicast一起使用，該食譜（顯然是舊版本）適用於Ryan。

NoMethodError: undefined method `[]' for nil:NilClass
/var/chef/cookbooks/nginx/recipes/source.rb:28:in `from_file'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/mixin/from_file.rb:30:in `instance_eval'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/mixin/from_file.rb:30:in `from_file'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/cookbook_version.rb:346:in `load_recipe'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context.rb:151:in `load_recipe'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context.rb:132:in `block in include_recipe'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context.rb:131:in `each'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context.rb:131:in `include_recipe'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/dsl/include_recipe.rb:26:in `include_recipe'
/var/chef/cookbooks/main/recipes/default.rb:4:in `from_file'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/mixin/from_file.rb:30:in `instance_eval'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/mixin/from_file.rb:30:in `from_file'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/cookbook_version.rb:346:in `load_recipe'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context.rb:151:in `load_recipe'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context/cookbook_compiler.rb:139:in `block in compile_recipes'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context/cookbook_compiler.rb:137:in `each'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context/cookbook_compiler.rb:137:in `compile_recipes'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context/cookbook_compiler.rb:74:in `compile'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/run_context.rb:86:in `load'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/client.rb:224:in `setup_run_context'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/client.rb:467:in `do_run'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/client.rb:200:in `run'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/application.rb:190:in `run_chef_client'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/application/solo.rb:239:in `block in run_application'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/application/solo.rb:231:in `loop'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/application/solo.rb:231:in `run_application'
/opt/chef/embedded/lib/ruby/gems/1.9.1/gems/chef-11.4.4/lib/chef/application.rb:73:in `run'

Answer 1

很抱歉遲到聚會。 如果您在需要將其作為依賴項輸入metadata.rb之前沒有解決此問題

如下所示：

name             'casino-saga'
maintainer       'Mikael Henriksson'
license          'All rights reserved'
description      'Installs/Configures casino-saga servers'
long_description IO.read(File.join(File.dirname(__FILE__), 'README.md'))
version          '0.1.0'

depends 'apt'
depends 'build-essential'
depends 'ohai'
depends 'runit'
depends 'nginx'
depends 'rbenv'
depends 'postgresql'

Answer 2

node ， node['nginx']或node['nginx']['source']均為nil 。

Answer 3

也許我來晚了，但是我通過下載ohai食譜並將其添加到我的Vagrantfile中解決了這個問題。

（是的，我正在通過Vagrant使用Chef）